This document is a compilation of articles written by the Process Engineering Students as part of the final works submitted as a requirement for their degrees. Each article, prepared according to criteria of the different research groups, describes the fundamentals of the project development and its results. The final reports of the work done by the students were evaluated by competent engineers in each area, but responsibility for all information and results therein corresponds solely to the authors. It´s expected that these results will contribute to the development of science and technology in the country.